These high power 10 W Zener diodes represented by the JEDEC registered 1N2970 thru 1N3015B and 1N3993 thru 1N4000A series provide voltage regulation in a selection over a 3.9 V to 200 V broad range of voltages. They may be operated up to 10 W with adequate mounting and heat sinking with their low thermal resistance. These Zeners are also available in JAN, JANTX, JANTXV military qualifications. Microsemi also offers numerous other Zener products to meet higher and lower power applications.

DO-4 (DO-203AA)

IMPORTANT: For the most current data, consult MICROSEMI's website:

http://www.microsemi.com

FEATURES

APPLICATIONS / BENEFITS

·

JEDEC registered 1N2970 thru 1N3015B and 1N3993 thru 1N4000A

·

Internal solder bond construction

·

Hermetically sealed (welded)

·

Zener Voltage 3.9V to 200V.

·

Also available in JAN, JANTX, and JANTXV qualifications per MIL-PRF-19500/124 by adding the JAN, JANTX, or JANTXV prefixes to part numbers for desired level of screening; (e.g. JANTX1N2970B, JANTXV1N3996A, etc.

·

Standard polarity is anode to case (stud) for 1N2970 thru 1N3015B and cathode to case for 1N3993 thru 1N4000A

The electrical characteristics are measured after allowing the device to stabilize for 90 seconds with 30

o

C Base temperature.

3.

The zener impedance (Z

ZT

) is derived from the 60 Hz ac voltage, which results when an ac current having an rms value equal to 10% of

the dc zener current (I

ZT

or I

ZK

) is superimposed on I

ZT

or I

ZK

. When making zener impedance measurements at the I

ZK

test point, it may

be necessary to insert a 60 Hz band pass filter between the diode and voltmeter to avoid errors resulting from low level noise signals. A curve showing the variation of zener impedance vs. zener current for three representative types is shown in Figures 2 and 3. Also see Microsemi MicroNote 202.

4.

These values of I

ZM

may be exceeded in the case of individual diodes. The values shown are calculated for the worst case that is a unit

of +/-5% tolerance at the high voltage end of its tolerance range. Allowance has also been made for the rise in zener voltage above V

ZT

,

which results from zener impedance and the increase in junction temperature as power dissipation approaches 10 watts.